Hi Guys,

My $0.02 worth... I own an FG20 which I've had for over 12 months now, I use it in an 80" taylorcraft, it pulls about 4.5kg static thrust on a 16"x8" wooden prop with from memory 7100 rpm, plane weighs 6.8kg so no 3d stuff...

I had a heap of trouble getting the engine to run reliably - partly me and partly the engine's original plug - faulty. I'm happy with the engine now and I use it to cruise around just off idle and do very slow fly bys.

I also converted a 26cc dual ball bearing weed eater engine to power a CMP Katana 140, which has a heap of grunt I have measured the engine running a 15"x8" fibre prop putting out over 6kg of static thrust, it has the pull start and I turned up a steel prop shaft so it's no light weight, the total mass of engine ready to run with magneto ignition is over 1.8kg (4lb). So again probably no 3d either - I haven't flown this model yet, having too much fun with my new Saito 100 flat twin in a decathlon and the 5 cylinder 325, in my new SU26 which is causing a few sleepless nights getting right, I just bought a new taco so I will post some rpm readings next time I'm at the field and write them down.